On the reliability of pulse oximetry at the sternum

Solà, Josep; Chételat, Olivier; Krauß, J.

doi:10.1109/iembs.2007.4352595

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…The concept of PPG and pulse oximetry at the sternum is has been demonstrated recently by [15]. Our findings showed that the parasympathetic and sympathetic autonomic modulation of the heart rate can be measured from PRV analysis using sternal PPG on a healthy group of subjects at rest.…”

Section: Discussionmentioning

confidence: 54%

Sternal pulse rate variability compared with heart rate variabilit on healthy subjects

Chreiteh

Belhage

Hoppe

et al. 2014

2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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The heart rate variability (HRV) is a commonly used method to quantify the sympathetic and the parasympathetic modulation of the heart rate. HRV is mainly conducted on electrocardiograms (ECG). However, the use of photo-plethysmography (PPG) as a marker of the autonomic tone is emerging. In this study we investigated the feasibility of deriving pulse rate variability (PRV) using PPG signals recorded by a reflectance PPG sensor attached to the chest bone (sternum) and comparing it to HRV. The recordings were conducted on 9 healthy subjects being in a relaxed supine position and under forced respiration, where the subjects were asked to breathe following a visual scale with a rate of 27 breaths/min. HRV parameters such as the mean intervals (meanNN), the standard deviation of intervals (SDNN), the root mean square of difference of successive intervals (RMSSD), and the proportion of intervals differing more than 50 ms (pNN50) were calculated from the R peak-to-R peak (R-R) and pulse-to-pulse (P-P) intervals. In the frequency domain the low and high frequency ratio of the power spectral density (LF/HF) was also computed. The Pearson correlation coefficient showed significant correlation for all the parameters (r > 0.95 with p < 0.001) and the Bland-Altmann analysis showed close agreement between the two methods for all the parameters during resting and forced respiration condition. Thus, PRV analysis using sternal PPG can be an alternative to HRV analysis on healthy subjects at.

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Section: Discussionmentioning

confidence: 54%

Sternal pulse rate variability compared with heart rate variabilit on healthy subjects

Chreiteh

Belhage

Hoppe

et al. 2014

2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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“…The vascular properties of the skin differ between various locations on the body. The tissue at the sternum is less perfused when compared with the peripheral locations such as the fingertip [8]. Nevertheless, acquiring the RR from sternal PPG has several advantages that make the sternum an appropriate sensor position.…”

Section: Discussionmentioning

confidence: 99%

“…This is supported by Nilsson et al [7] who found that the respiratory and cardiac induced variations in the PPG were different at different measuring sites (finger, forearm, wrist, forehead, and shoulder). The application of pulse oximetry using PPG at the sternum has recently been demonstrated [8]. However, the extraction of the RR from sternal PPG has not been investigated.…”

Section: Introductionmentioning

confidence: 99%

Estimation of respiratory rates based on photoplethysmographic measurements at the sternum

Chreiteh

Belhage

Hoppe

et al. 2015

2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

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The respiratory rate (RR) is a clinically important vital sign and is a frequently used parameter in the general hospital wards. In current clinical practice, the monitoring of the RR is by manual count of the chest movement for one minute. This paper addresses a new approach where the respiratory rate is extracted using photoplethysmography (PPG) on the chest bone (sternum). Sternal PPG signals were acquired from 10 healthy subjects resting in a supine position. As reference signals, finger PPG, electrocardiogram (ECG), and capnography were simultaneously recorded during spontaneous and paced breathing. The sternal PPG signals were then compared with the reference signals in terms of Bland-Altman analysis, the power spectrum analysis and the magnitude squared coherence. The Bland-Altman analysis showed an average bias of 0.21 breaths/min between RR extracted from sternal PPG and capnography. The respiratory power content at the sternum was 78.8 (38) % in terms of the median and (the interquartile range). The cardiac content was 19 (18.4) % within the cardiac region. The results from the magnitude squared coherence analysis was 0.97 (0.09) in the respiratory region (6 to 27 breaths/min) and 0.98 (0.01) in the cardiac pulse region (30-120 beats/min). This preliminary study demonstrates the possibility of monitoring the RR from sternal PPG on a healthy group of subjects during rest.

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“…We are targeting a location on truncus either ventral or dorsal and we are currently investigating this. Pulse oximetry on the sternum have previously been demonstrated by [16], but it needs more investigation before it can be used clinically.…”

Section: Pulse Oximetry Applicationmentioning

confidence: 99%

A wearable “electronic patch” for wireless continuous monitoring of chronically diseased patients

Haahr

Duun

Thomsen

et al. 2008

2008 5th International Summer School and Symposium on Medical Devices and Biosensors

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Abstract-We present a wearable health system (WHS) for non-invasive and wireless monitoring of physiological signals. The system is made as an electronic patch where sensors, low power electronics, and radio communication are integrated in an adhesive material of hydrocolloid polymer making it a sticking patch. The patch is made with a reusable part and a disposable part which contains the adhesive material and the battery. This part is changed once every week. The patch has a size of 88 mm by 60 mm and a thickness of 5 mm. It is made for attachment on truncus or the greater muscle groups. The patch is demonstrated in two applications: Monitoring of electromyography (EMG) and arterial oxygen saturation by pulse oximetry (SpO2). The pulse oximetry sensor is made of a concentric backside Silicon photodiode with a hole in the middle for the two light sources. This makes it suitable for reflectance pulse oximetry. For the EMG application three standard dry silver electrodes are used separated by 10 mm.

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On the reliability of pulse oximetry at the sternum

Cited by 6 publications

References 3 publications

Sternal pulse rate variability compared with heart rate variabilit on healthy subjects

Sternal pulse rate variability compared with heart rate variabilit on healthy subjects

Estimation of respiratory rates based on photoplethysmographic measurements at the sternum

A wearable “electronic patch” for wireless continuous monitoring of chronically diseased patients

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On the reliability of pulse oximetry at the sternum

Cited by 6 publications

References 3 publications

Sternal pulse rate variability compared with heart rate variabilit on healthy subjects

Sternal pulse rate variability compared with heart rate variabilit on healthy subjects

Estimation of respiratory rates based on photoplethysmographic measurements at the sternum

A wearable &#x201C;electronic patch&#x201D; for wireless continuous monitoring of chronically diseased patients

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A wearable “electronic patch” for wireless continuous monitoring of chronically diseased patients